The
HP48GX
has long been the #1 tool for Land Surveyors and Engineers.
Since its introduction as the replacement for the venerable HP41CX, it has garnered almost
exclusivity among the Land Surveying and Engineering industries due to
its expandable memory, programmability, and communications
capabilities. The HP48GX really took over in the Land Surveying
industry when Tripod Data Systems started making add-on COGO and data
collection cards that were a godsend to field surveyors and office
surveyors alike. Later, SMI and RAMSS, among others, joined in,
and the HP48GX became an industry standard.
Now, Hewlett Packard has
discontinued the HP48GX in favor of the HP49G+, which really is an
all-around more powerful calculator. However, we're faced with a
couple of problems.
1. The HP48GX is the only
calculator that industry leaders TDS, SMI, and RAMSS make COGO cards
for.
2. The HP48GX is the only
calculator that has data collection modules available for Land
Surveyors.
3. The HP48GX is the only
calculator that environmental cases are made for.
4. The HP48GX has a serial
cable interface that allows it to hook up to most total stations,
which the HP49G+ does not.
These reasons are way more than
enough to continue the HP-48GX as the reigning king of Engineering and
Land Surveying calculators. Luckily, you can still find new and
used HP-48 calculators through outlets like
E-Bay and
Amazon.com. You'll tend to pay more than you used
to, but it's still worth it. We've made this site to help you
find your HP48GX, along with HP48GX Books, HP-48GX Accessories (such
as printers and communications software), and free HP 48GX programs.
For more information, you can visit
our otherHP48GX pages by clicking on the links in the left-hand
margin. For more information:
Over 2,300 functions including over 300 for
scientific and engineering applications
Built-in equation library with over 300 formulas
and constants
2-way infrared communication, RS-232C serial
port; supports optional printer
128 KB memory; 2 card ports for expandable RAM
and ROM
2-D and 3-D graphing capabilities
Display: 8-line-by-22-character, 131 x 64 pixel LCD
Entry system
logic: RPN
Graphing:
2-dimensional plot types: function, parametric, polar, differential
equation, scatter, conic section, histogram, bar, truth;
3-dimensional plot types: wireframe parametric surface, slopefield,
contour, pseudo-contour, gridmap, Y-slice; 15 interactive zoom
functions including autozoom and zoom to last view
Calculus and
symbolic math: Symbolic derivatives, polynomial integration;
numerical integration, Taylor series, numerical differential
equation solver; HP Solve application provides back-solving for any
variable in your equation
Calculus with
graphics: From graphics plot, find roots, intersection points,
local extremes, derivatives (symbolic and graphical), slope, area
under curve
Advanced math:
HP MatrixWriter application provides easy entry, editing, and
viewing of matrices
Scientific
features: Angle conversions, base conversions, and arithmetic;
extensive computer math functions including bit manipulation and
Boolean operations–all fully programmable; polar/rectangular
conversions
Statistical
features: Linear regression, curve fitting (linear, log,
exponential, power, or best fit); distributions: normal, chi square,
student’s t, F distribution; mean, sample, and population standard
deviation; variance and covariance
Constants and
conversions: 49 pre-defined physical and mathematical constants
and 148 units of measure pre-defined; others may be added
Input/output:
2-way infrared communication for transferring programs and data
between HP 48s, infrared output to optional HP 82240B Infrared
Printer, RS-232C serial port for connection to PC or Macintosh
computers with optional cable and software
Memory: 128
KB RAM and two card ports for RAM or ROM cards
Engineering
equation library: Equations grouped by engineering discipline:
15 technical subjects, 322 equations total, 100 equation groups
Precision:
Real precision: ± 1.0 x 10-499 to ±9.99999999999 x 10499; numbers
are shown with 12 mantissa digits and a 3-digit exponent; displayed
numbers are rounded to 12 significant digits or fewer as selected by
the user
In the box:
Owner’s manual, Quick Start Guide, 3 AAA alkaline batteries, soft
carrying case
Other features:
HP EquationWriter Application eliminates the need to convert to
cumbersome strings of parentheses and computer symbols and permits
algebraic entry of expressions; notepad through variables; graphing
functions with interactive 3-D graphics
Power source:
3 AAA batteries
Warranty: 1
year
HP 48G+ Technical Specifications
128 KB of RAM and a built-in
equation library
More than 300 commonly used
formulas and scientific constants
Object-oriented programming
View, enter, and manipulate arrays
View equations and formulas just as
you would in a textbook or on paper
Display:
8-line by 22-character, LCD
Menus, prompts,
alpha messages, softkeys: Yes
RAM: 32 KB
Number of
variables or registers: Unlimited within available memory
Built-in
functions: Over 2,300
Redefineable
keyboard and menu keys: Yes
Graphic
functions with interactive graphics: 3D
Batteries:
3 AAA
Warranty: 1
year
HP 48G+ Technical Specifications
32 KB of RAM
Built-in
equation library
300+
Formulas/Scientific constants
Create
applications quickly and easily
Statistic/Mathematic/Scientific features
Display: 8 line x 22 char. LCD
Entry system logic:
RPN
Menus, prompts, alpha
messages, softkeys: Yes
RAM/no of variables or
registers: 32 KB, unlimited withing available memory
